Osteonecrosis due to previous trauma, right shoulder

This code signifies the death of bone tissue in the right shoulder joint, specifically caused by a prior traumatic injury. This condition, also known as avascular necrosis, results from a disruption of blood supply to the bone, leading to its collapse and potential joint destruction.

This code is appropriate when documentation clearly states osteonecrosis of the right shoulder and explicitly links its etiology to a previous traumatic event. Supporting documentation would include imaging reports (e.g., MRI, X-ray) confirming osteonecrosis and patient history detailing a significant shoulder injury preceding the diagnosis.

• Ensure the documentation specifies "previous trauma" as the cause; otherwise, consider other M87 subcategories.
• Verify laterality (right shoulder) is clearly documented.
• Do not use this code for osteonecrosis due to current trauma; that would fall under a different code category.